Canadian Forestry Journal, December, 1915. 



307 



Double and single beaters in the Experimental Paper Mill. 



interest. Here was seen in operation 

 the process of turning wet pulp to 

 various grades of paper, from the 

 manipulation of the pulp in the 

 "beaters," the flowing across the 

 wires, the drying, and winding. 

 More than ordinarily interesting was 

 the presentation to all visitors of 

 samples of excellent blotting paper 

 recently taken from the machine — 

 the first of the product, by the way, 

 to be made in the Dominion. 



There was seen also the Depart- 

 ment of Timber tests where a Hatt- 

 Turner Impact testing machine, a 

 30,000 lb. Olsen Universal machine, 

 a 200.000 lb. Wicksteed and 150,000 

 lb. Emery machines are available 

 for experiments in establishing the 

 strength characteristics of important 

 Canadian wood species. The testing 

 proceedure includes eight strength 

 tests, static bending, compression 

 parallel to grain, compression per- 

 pendicular to grain, shear, tension, 

 impact bending, cleavage and hard- 

 ness. Important work has been ac- 



complished here in the testing of 

 Nova Scotia mine timbers. Timber 

 physics forms yet another major di- 

 vision of the laboratories in which 

 the equipment includes microtome, 

 microscopes, photomicrographic ap- 

 paratus, projection lantern, cameras, 

 electric ovens, autoclave, balances 

 and so forth. The work has to do 

 largely with determining the physi- 

 cal and structural properties of 

 wood by extended and varied tests. 

 The Division of Wood Preservation 

 was organized in October, 1914, and 

 includes the study of wood preser- 

 vatives and methods of treating 

 wood to prolong the life of railroad 

 ties, paving blocks, etc. 



Curbing the Waste. 



The inspection of the Laboratories 

 was followed by a number of brief 

 addresses. Hon. Dr. Roche expres- 

 sed the sense of satisfaction he felt 

 in having brought into existence 

 during his administration of the De- 

 partment of the Interior an institu- 



